Technical Specifications Supported Input Signal: 4‑20 mA, 0‑10 VDC analog signal Resolution: 16‑bit Basic Accuracy: ±0.1% full scale Channel Isolation: Galvanic isolation per channel Power Supply: 24 VDC Operating Temperature: ‑20 °C to +65 °C Storage Temperature: ‑45 °C to +85 °C Sampling Rate: Configurable channel sampling cycle Certifications: IEC 61508 SIL3, UL, CE Installation Mode: Tricon chassis rack‑mount Weight: 1.42 kg
Functional Features Multi‑type industrial analog signal acquisition for field pressure, temperature, flow transmitters. 16‑bit high‑resolution analog‑to‑digital conversion ensures measurement precision. Independent galvanic isolation for each input channel eliminates ground‑loop interference. Complete channel diagnosis, detect transmitter fault, loop open‑circuit and short‑circuit. Hot‑swap support; module replacement does not interrupt system safety operation. Front‑panel LED indicators reflect channel working status and fault alarm information. Comply with TMR voting mechanism of Tricon safety system for fault‑tolerant data processing. Configurable sampling parameter via TriStation software.
Application Scenarios Analog physical‑quantity acquisition for petrochemical plant SIS safety instrumented system. Pressure, flow and temperature signal collection for oil‑gas production safety control loops. Safety‑relevant process variable monitoring for chemical reactor interlock protection system. Process parameter acquisition for refinery emergency shutdown system. Analog signal measurement for power plant boiler safety protection cabinet.
Performance Parameters Measurement Precision: ±0.1%FS full‑scale basic accuracy Signal Conversion Speed: Configurable sampling rate for each analog channel Isolation Withstand Capacity: Channel‑to‑channel galvanic isolation against interference Fault Diagnosis Response: Fast identification for analog loop abnormal state Redundancy Performance: Cooperates with TMR system to realize median‑value voting for analog data
Material Composition Circuit Board: Multi‑layer conformal‑coated industrial PCB Housing: Metal‑reinforced flame‑retardant plastic housing Signal Conversion Components: High‑precision analog‑digital conversion chip Isolation Components: Channel‑level galvanic isolation assemblies Back‑plane Connector: Gold‑plated high‑reliability back‑plane connector Status Indicator: LED status indicator group
Structural Characteristics Standard single‑slot rack‑mount module structure matching Tricon system chassis. Front panel with LED indicator window for channel status observation. Back‑plane edge connector connects to system internal TriBus back‑plane bus. Internal partition layout separates analog signal circuit and digital logic circuit. Front‑panel locking latch fixes module to chassis slot firmly.
Working Principle Analog current or voltage signals output by field transmitters transmit into AIH3273X module through termination assembly and interconnection cables. Each channel passes galvanic isolation circuit and enters high‑precision A/D conversion unit. Analog physical‑quantity signal converts into digital value. Digital measurement data transmits to Tricon main processor via chassis TriBus back‑plane bus. Main processor completes median‑value voting processing for three redundant channel data. On‑board diagnosis circuit continuously monitors loop state and sends fault alarm information to system when abnormality occurs.
Installation Requirements Insert module into designated slot of Tricon chassis and lock front‑panel latch completely. Adopt shielded twisted‑pair instrument cables for all field analog signal wiring. Connect module to matched external termination panel by original Triconex interconnect cable assembly. Carry out single‑point grounding for field cable shield at termination panel according to official specification. Signal cables must keep physical separation from high‑voltage power cables in cabinet. Maintain good ventilation around module to guarantee operating temperature within allowable range.
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